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    <title>Document</title>
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            color:red;
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        <a href="https://www.newduba.cn/">程序</a>
        <a href="https://account.bilibili.com/">billbill</a>
        <em>着重</em>
        <i>斜体</i>
        <b>粗体</b>
        <p>感冒<strong>加重了</strong></p>
        <del>删除</del>
        <span>无特定含义</span>
       <ul type="disc">
            <li>妈妈</li>
            <li>爸爸</li>
       </ul>
       <ul type="circle">
           <li>妈妈</li>
           <li>爸爸</li>
       </ul>
      <ul type="square">
           <li>妈妈</li>
           <li>爸爸</li>
      </ul>
      <ul type="none">
        <li>妈妈</li>
        <li>爸爸</li>
      </ul>
      <ul>
        <li></li>
        <li></li>
        <li></li>
      </ul>
             <table border="1" width="400" height="400">
                <tr>
                    <td>1</td>
                    <td>2</td>
                    <td rowspan="2">3</td>
                </tr>
                <tr>
                    <td>4</td>
                    <td>5</td>
                </tr>
             </table>
             <table>
                <tr></tr>
                <tr></tr>
                <tr></tr>
             </table>
             <form>
                用户名:<input type="text">
                密码:<input type="password">
                <input type="submit" value="登录">
                <h1>标题</h1>
                <p>段落</p>
                <ul>
                    <li>列表1</li>
                    <li>列表2</li>
                </ul>
                
             </form>
             <a href=“#”>超链接</a>
             <span>内容</span>
             <em>样式</em>
             <aside>侧边栏</aside>
             <footer>脚部</footer>
             <article>独立内容</article>
            <p>hnecnhnxnecnfxmec</p>
            <p>crixuefucfhexrucfhn</p>
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